Thanks to Mark Johnston <markj@FreeBSD.org> for recommending this configuration. The article is also mirrored on the FreeBSD Wiki.
Host
Add the following lines to /etc/rc.conf:
nfs_server_enable="YES"
mountd_enable="YES"
mountd_flags="-n"
rpc_lockd_enable="YES"
rpc_statd_enable="YES"
rpcbind_enable="YES"
For some reason the NFS server needs to be restarted the first time after boot. A simple way to do this automatically is:
# echo "service nfsd restart" >> /etc/rc.local
Set the sharenfs property to the dataset you want to share. Replace the IPs
and pool/dataset* with your desired values. ZFS properties are documented in
zfsprops(8).
We’re going to share 2 datasets, one with read-write and one with read-only access:
# chmod -R 777 /pool/dataset_rw
# zfs set sharenfs='-network=192.168.1.0/24,-alldirs' pool/dataset_rw
# zfs set sharenfs='ro=192.168.1.0/24,-alldirs' pool/dataset_ro
Start the NFS server:
# service nfsd start
# service mountd reload
Guest
Acquire the host’s IP address using ifconfig(8) on it first. We’ll assume it’s 192.168.1.5.
Mount the filesystems. /pool/dataset* corresponds to the actual mount point
of the dataset in the host:
# mkdir -p /mnt/dataset_rw /mnt/dataset_ro
# mount -t nfs -o rw 192.168.1.5:/pool/dataset_rw /mnt/dataset_rw
# mount -t nfs -o ro 192.168.1.5:/pool/dataset_ro /mnt/dataset_ro
When done, unmount:
# umount /mnt/dataset_rw /mnt/dataset_ro
In case you want the filesystems to be mounted on boot, add the following lines
to /etc/fstab:
192.168.1.5:/dataset_rw /mnt/dataset_rw nfs rw 0 0
192.168.1.5:/dataset_ro /mnt/dataset_ro nfs ro 0 0